12011211313223 has 4 divisors (see below), whose sum is σ = 12098884388640. Its totient is φ = 11923538237808.

The previous prime is 12011211313187. The next prime is 12011211313261. The reversal of 12011211313223 is 32231311211021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12011211313223 - 2¹⁸ = 12011211051079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011211613223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43836537503 + ... + 43836537776.

It is an arithmetic number, because the mean of its divisors is an integer number (3024721097160).

Almost surely, 2^{12011211313223} is an apocalyptic number.

12011211313223 is a deficient number, since it is larger than the sum of its proper divisors (87673075417).

12011211313223 is an equidigital number, since it uses as much as digits as its factorization.

12011211313223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87673075416.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12011211313223 its reverse (32231311211021), we get a palindrome (44242522524244).

The spelling of 12011211313223 in words is "twelve trillion, eleven billion, two hundred eleven million, three hundred thirteen thousand, two hundred twenty-three".